Roll construction.



WIN

W, THINKS.

ROLL CONSTRUCTION.

APPLICATION FILED MAR. a. 1916.

Patented July 11, 1916.

WILLIBALI) THINKS, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR, BY MESNEASSIGN- MENTS, TO NATIONAL BRUSH WASHING MACHINE COMPANY,v 0FPITTSBURGH, PENNSYLVANIA, A. CORPORATION OF DELAWARE.

Rom. CONSTRUCTION.

Specification of Letters Patent.

Patented July 11,1916.

Original application filed September 28, 1915, Serial No. 53,004.Divided and. this application filed March 3, 1916. Serial No. 81,823. I

To all whom it may concern Be it known that I, WILLIBALD TRINKs, acitizen of the United States, andresiding in the city of Pittsburgh, inthe county of Allegheny and State of Pennsylvania, have invented ordiscovered new and useful Improvements in Roll Construction, of whichthe following is a specification.

My invention consists in a new and improved roll construction especiallyintended for the backing or tension rolls of rotarybrush washingmachines, and similar purposes.

This patent application is a division of my pending patent applicationfor Improvements in washing machines, filed September 28, 1915, SerialNumber 53,004.

The object in view is the provision of a light weight, inexpensive anddurable roll which is water-tight, presents an unyielding andunindentable perimetal surface and which will not sag, buckle or bendfrom use. To accomplish these purposes, I provide a roll structurecomprising an outer metal cylinder, preferably of non-corrosivematerial, such as brass, and an internal reinforcement for said cylinderconsisting of an expandible cylindrical socket member having slottedwalls and a plug member driven into said socket member to expand thelatter into snug supporting contact with the said metal cylinder. Toprevent the entrance of water, the ends of said cylinder are closed withend members.

Novel features of construction and arrangement of parts will appear fromthe following description.

In the accompanying drawings, Figure 1 is a longitudinal section of myimproved roll; Fig. 2 is an end view of the socket member; Fig. 3 is asectional view taken 5 or other means for mounting length of the socket2 is less than that of the cylinder 1.

3 is the frusto-conical plug adapted to enter the socket 2 and expandthe same against the cylinder 1.

The socket 2 is first inserted into the cylinder 1 and is properlycentered and held stationary while the plug 3 is driven into its bore,expanding the socket into snug c011- tact with the cylinder 1, therebysupporting and reinforcing the latter. The ends of the cylinder 1 areclosed by members 4: turned from brass castings or otherwise formed ofsome non-corrosive material. Journal studs the roll extending outwardlyaxially of the ends 1, may be provided. The end members 4 are eachprovided with an annular perimetal surface 6 which fits snugly into theopen end of the cylinder 1 and is sweated in place with soft solder. Aradial flange 7 is also provided on the member 4, which abuts againstthe'end of the cylinder 1.

It is evident that my improved roll will present a hard, unindentableworking surface; that it will not sag, bend or buckle, and that waterand filth are completely excluded from its interior.

What I desire to claim is v 1. A roll structure comprising an outermetal cylinder and an internal reinforcement for the same consisting ofan integral expandible cylindrical socket member having longitudinallyslotted walls and a ta- ,pered plug member driven into said socketmember to expand the latter against said cylinder, for the purposedescribed.

2. A roll structure comprising an outer metal cylinder and an internalreinforcement for the same consisting of an expandible cylindricalsocket member having longitudinal slots in its Wall extendingalternately from either end and a tapered plug member driven into saidsocket member to expandthelatter against said cylinder, for

' the purpose described.

3. A roll structure comprising an outer metal cylinder, an internalreinforcement for said cylinder consisting of an expandible socketmember having its Wall slotted longitudinally alternately from eitherendand a tapered plug member driven into said socket member to expandthe latter against said cylinder, and end members tightly closing theends of said cylinder, for the purpose described.

4. A roll structure comprising an outer 'metal cylinder, an internalreinforcement VVILLIBALD THINKS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

